From c7d4dfcd142d624ed43ac590c6ef5eca24233e30 Mon Sep 17 00:00:00 2001 From: Sughosh Ganu Date: Tue, 22 Aug 2023 23:10:05 +0530 Subject: scripts/Makefile.lib: Embed capsule public key in platform's dtb The EFI capsule authentication logic in u-boot expects the public key in the form of an EFI Signature List(ESL) to be provided as part of the platform's dtb. Currently, the embedding of the ESL file into the dtb needs to be done manually. Add a target for generating a dtsi file which contains the signature node with the ESL file included as a property under the signature node. Include the dtsi file in the dtb. This brings the embedding of the ESL in the dtb into the U-Boot build flow. The path to the ESL file is specified through the CONFIG_EFI_CAPSULE_ESL_FILE symbol. Signed-off-by: Sughosh Ganu Reviewed-by: Tom Rini Reviewed-by: Ilias Apalodimas --- scripts/Makefile.lib | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'scripts') diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 8c5e25c31c5..8dc6ec82cd5 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -334,6 +334,21 @@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ ; \ sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) +quiet_cmd_capsule_esl_gen = CAPSULE_ESL_GEN $@ +cmd_capsule_esl_gen = \ + $(shell sed "s:ESL_BIN_FILE:$(capsule_esl_path):" $(capsule_esl_input_file) > $@) + +$(obj)/.capsule_esl.dtsi: FORCE + $(call cmd_capsule_esl_gen) + +capsule_esl_input_file=$(srctree)/lib/efi_loader/capsule_esl.dtsi.in +capsule_esl_dtsi = .capsule_esl.dtsi +capsule_esl_path=$(abspath $(srctree)/$(subst $(quote),,$(CONFIG_EFI_CAPSULE_ESL_FILE))) + +ifdef CONFIG_EFI_CAPSULE_AUTHENTICATE +dtsi_include_list += $(capsule_esl_dtsi) +endif + dtsi_include_list_deps = $(addprefix $(obj)/,$(subst $(quote),,$(dtsi_include_list))) $(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) FORCE -- cgit v1.2.3